我正在尝试将一个空的临时文本文件上传到谷歌驱动器,但它没有成功。 file
返回null。但是,我可以使用google驱动器网站上的示例从我的相机上传图像。我是否需要为缓存设置任何特殊权限?谢谢你的帮助。
这是我的尝试:
java.io.File outputDir = getApplicationContext().getCacheDir(); // context being the Activity pointer
java.io.File tempFile = java.io.File.createTempFile("hello", "txt", outputDir);
FileContent mediaContent = new FileContent("text/plain", tempFile);
// File's metadata.
File body = new File();
body.setTitle(tempFile.getName());
body.setMimeType("text/plain");
File file = service.files().insert(body, mediaContent).execute();
google示例如何做到:
String mediaStorageDir = Environment.getExternalStoragePublicDirectory(
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date());
fileUri = Uri.fromFile(new java.io.File(mediaStorageDir + java.io.File.separator + "IMG_"
+ timeStamp + ".jpg"));
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
saveFileToDrive();
private void saveFileToDrive() {
Thread t = new Thread(new Runnable() {
@Override
public void run() {
try {
java.io.File fileContent = new java.io.File(fileUri.getPath());
FileContent mediaContent = new FileContent("image/jpeg", fileContent);
// File's metadata.
File body = new File();
body.setTitle(fileContent.getName());
body.setMimeType("image/jpeg");
File file = service.files().insert(body, mediaContent).execute();
}
});}
答案 0 :(得分:0)
greenapps回答了这个问题。我无法上传空文本文件。我想我可以,因为你可以上传一个带有正文的文件(标题,mime类型......)但没有任何内容。
我的代码最终成为了
java.io.File tempFile = java.io.File.createTempFile("supertime", "txt");
String tempPath = tempFile.getAbsolutePath();
BufferedWriter bw = new BufferedWriter(new FileWriter(tempPath));
bw.write("Hello");
bw.close();
FileContent mediaContent = new FileContent("text/plain", tempFile);
Log.i("Drive", tempPath);
FileInputStream fis = new FileInputStream(tempPath);
StringBuilder sb = inputStreamToStringBuilder(fis);
showText(sb);
Log.i("Drive", "done input stream");
// File's metadata.
File body = new File();
body.setTitle("Kapleck");
body.setMimeType("text/plain");
File file = service.files().insert(body, mediaContent).execute();